Protein skimmer quality

I know that there is a sticky for this, but that sticky is aimed more towards what people have, not what they want an opinion on, or so I think, and if this post belongs there, feel free to move it there. Anyways I don't really know much about the quality of protein skimmers, and since I am on a pretty tight budget, would this http://www.ebay.com/itm/150-gal-Aqu...351?pt=LH_DefaultDomain_0&hash=item5d36b65467 be an acceptable skimmer for a 50 gallon tank? and if not, what should I look for in a skimmer? I don't want to sacrifice comfort of an animal for a few bucks, but if this one is adequate, might as well get it!